Heating and welding metals.



PATENTED FEB. 25, 1908. G. RODRIGUBS-ELY.& E. GAUTHIER.

HEATING AND WELDING METALS.

APPLICATION FILED APR. 5.1907.

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' OAMILLE RoDRIeuEs- ELY AND EMILE GAUTHIER, OF PARIS, FRANCE.

"'I i EATi NG Ania wEnDmG METALS.

- RIGUES-ELY and EMILE GAUTHIER, citizens seal of France, residing atParis i n the Republic of France, have inventfidcertain new and usefulImprovementsin Heating and Weld-' ing Metals, of which the-following'isa full,

clear, and exact description.

The subject of the invention is anapppratus for heating'and weldingmetals means of a mixture'of gases under pressure and the improvementconsists in the provision of novel means for'mixing the gases, that isforming the gas mixture, consisting of the combustible gas proper andthe gas supporting the combustion, before they are brought to operate onthe piece to be welded.

The improvement further consists in the provision oli novel means forleading the gases under different degrees of pressure and causing thegas under lower pressure to be carried along by the one under highpressure and led by it to the piece to be worked.

The device embodying our invention is characterized by the arrangementof intercommunicating conduits, which bring about the mixing of theheating gas and oxidizing gas in the apparatus before they have left thesame. J

I The device is further characterized in that the outlet mouth-piece is,interchangeable and adapted to the particular pur ose in view, or afterwearing out can be rep aced.

A further novel feature of the invention is the particular means forproducing a sure etween the conduits for the compressed gas and themixture of gas under lower pressure. For this purpose the apparatus isprovided with a suitable seahng device, arranged between the mouth-pieceand the high pressure gas conduit and adapted for after adjustment bymeans of a screw.

A further feature of the invention'consists in the provision of meansfor permitting the inlet and outlet channels for the mixture to bealtered to suit the pur ose in View. This is attained by, the plura ityof parts in the replaceable part of the mouth-piece, and the conicallyformed leading channels.

In the accompanying drawin s: Figural is a central longltudinal sectionaview of the apparatus. Fig. 2 is a central longitudinal sectional viewof a mouth-piece having three parts. I

The gas under low pressure enters the head a through one or more inletopenings 1) and Specification 6r Letters Patent. v application filedApril 6. 1907. Serial No. 366.549.

sage Z.

Patented Feb. 25, 1908.

fills the circular space 0, around the center piece e. The current ofgas under ressure (for example, the current of oxygen enters through thetube (1 into the central piece e,

through which the channel f leads and which is provided with a flaringend having several lateral passages in i In a chamber g of the art athere is a sealing device consisting o a roundedolf end piece formed ontheann'er end of the mouthpiece The rounded head on the mouthpiece 1sparticularly intended to restrict the communication between the circularspace 0 and the channel f exclusively to the openings 7c, and to preventany other communication, The head has several channels k, and a furtherchannel I which is prolonged into the channels m and a. As the currentof gas under pressure passes through the channel I, a vacuum arises inthe space g, which causes the gases under low pressure to be aspirated,that is drawn through the passages h. In this wa the gases under lowressure are carried a ong by the gases under igh pressure and the mixingof the two gases takes places in the space m. The mixture leaves themouth-piece through the channel n. If a current of gas under pressure isallowed to pass through the tube d, it passes through the channel f andthe injector pas- On passing out of the same a diminution of pressure iscreated in the channels is, which results in a lessening of the pressureof gas led from the circular space 0; The

two gases are mixed together inside'the channel m, and after they havebeen led through the tube n are ignited at the outlet of the same.

Since the head 3' of Fig 1 and the head K of Fig. 2 are interchangeableit is possible with one and the same holder, by means of severalinsertpieces, to alter the size of the passage openings, and toproduce in thisway weaker and stronger flames and to obtain flame jets of a length anddiameter suited to the particular requirements at the time. Thereplacing of the mouthiece is produced by screwing the same in and out.

In the form of constructionrepresented in Fig. 2 a mouth-piece withthree parts is shown. The first part 7' has the longitudinal injectorpassage 1 and the side entrances 7c for the gases drawn in. The secondpart 9' which may be integral with the part y" hears the mixing channelm and the third 1'' the outlet channel n. The relation of the crosssections between the injector chanchannels, and allows nel l, suctionopenings 70, mixing and outlet channels m and 'n, vary according to thecombustible gases used. In using the double or triple part mouth-piece,the pieces j, and 1'', can of course be. proportioned or exchangedaccording to the particular object in View and the properties of thecombustible gases used. This double and triple part construction permitsmoreover the use of conical (convergent and divergent) leading theapparatus to be easily mounted and dismounted and further permits theparts Worn out to be easily replaced.- The parts serving to conduct thegases are comp etely protected from exterior damage and are readilyaccessible by screwing the mouth-piece J loose by means of a screw key,for the purpose of. permitting damaged parts, inclosed in the head to beeasily replaced.

I claim: y y

1. Apparatus; for heating and Welding metals by means of gases, havingseparate conduits for the two ases under different degrees of pressure,an means for causing the as under lower pressure y the gas under higherpressure, said means comprising a removable outlet nozzle part to becarried along having a mixing chamber and a rounded head constitutin aseal and formed witha longitudinal and lateral passages.

2. An apparatus for heating and welding metals by means of gases havingseparate 1 conduits for the two kinds of gases under different degreesof pressure, an interposed removable part constituting a nozzle havin amiXin chamber and formed at one end with ra i al channelsconstitutingports for the passage of gas under low pressure to the themixing chamber.

A0 mixing chamber, and a longitudinal channel i v for the passage of gasunder high pressure, to

'3. A removable and detachable mouthpiece for metal heating and weldingappaa' ratus employing gases under difiBIGDQPIZBS- sures comprising anoutlet nozzle, a IIllXlIlg chamber and an injector, said injector bein Lformed with a'central and a lateral channe and with a seal to the highpressure gas con-j duit. i. v 1- i In witness whereof, We subscribe oursignatures in presence of two Witnesses. v Y O. RODRIGUES-ELY; b E.GrAUTHIER. Witnesses:

-DEAN B. MASON, MAoHsFE BERG.

